the density of totally crystalline polyethylene at room temperature is 1.213 g/cm3. also, at room temperature the unit cell for this material is triclinic with the following lattice parameters: a

Answer:

forced convection

Explanation:

When a fan, pump or suction device is used to facilitate convection, the result is forced convection. Everyday examples of this can be seen with air conditioning, central heating, a car radiator using fluid, or a convection oven.

Answer:

(a) Qh(dot)=600 kW, Qc(dot)=400 kW  is an irreversible process.

(b) Qh(dot)=600 kW, Qc(dot)=0 kW  is an impossible process.

(c) Qh(dot)=600 kW, Qc(dot)=200 kW  is a reversible process.

Explanation:

T(hot) = 1200k, T(cold) = 400

efficiency n = (Th - Tc ) / Tc

n = (1200 - 400) / 1200 = 0.667 (this will be the comparison base)

(a)

Qh = 600 kW, Qc = 400 kW

n = (Qh - Qc) / Qh ⇒ (600 - 400) / 600

n = 0.33

0.33 is less than efficiency value from temperature 0.67

∴ it is irreversible process

(b)

Qh = 600 kW, Qc = 0

n = (Qh - Qc) / Qh ⇒ (600 - 0) / 600 = 1

efficiency in any power cycle can never be equal to one.

∴ it is an impossible process.

(c)

Qh = 600 kW, Qc = 200 kW

n = (Qh - Qc) / Qh = (600 - 200) / 600

n = 0.67 (it is equal to efficiency value from temperature)

∴ it is a reversible process

The expression for the pressure gradient is given below: (image)

Pressure gradient denotes the alteration in atmospheric pressure over an indicated distance. Essentially, it measures how quickly the pressure changes regarding distance, figuring by dividing the variation of pressure by the range for which such alteration happens.

Regarding meteorology, the force and direction of winds closely associate to pressure gradient's influence. There exists a flow of air from high amounts of pressure towards low ones; thereby, a greater difference of pressure over a given distance results on far stronger winds causing effects.

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Answer:

none

Explanation:

because it doesnt turn kinetic energy into electricity a

Kinetic energy turbines, also called free-flow turbines, generate electricity from the kinetic energy present in flowing water rather than the potential energy from the head. The systems can operate in rivers, man-made channels, tidal waters, or ocean currents. Because kinetic systems utilize a water stream's natural pathway, they do not require diversion of water through man-made channels, riverbeds, or pipes, although they might have applications in such conduits. Kinetic systems do not require large civil works because they can use existing structures, such as bridges, tailraces, and channels. so it doesnt

Answer:

True

Explanation:

It's just because of the processing

Answer:

c) can be made with a variety of surface finishes.

Explanation:

The missing options are;

When it comes to concrete work in construction, the concrete can be cast either in-situ or in form of pre-cast concrete.

Now in-situ concrete means concrete done on the construction site being built while pre cast concrete simply means concrete cast outside in a factory or yard and brought to site to mount.

These pre cast concrete could have different surface finishes as required as this is one of it's advantages over in situ because there is a lot of space and room to have the desired concrete finish.

a) are typically manufactured on site and then hoisted into place.

b) cannot be fiber-reinforced.

c) can be made with a variety of surface finishes.

d) never include insulation.

e) often are unreinforced.

Answer:

The Material engineers trying to discover when they study different materials is described below in complete detail.

Explanation:

Material engineers analyze various elements to discover the purpose and explanation of its existence, the chemical characteristics, how long it has stood there, and how it influences human life. The material engineer is an engineering exercise that concentrates to enhance human activity by investigating the environment and the diverse elements or elements it holds.

There are 2n potential binary input possibilities for n input variables. There is just one potential output value for each given input combination.

The number of combinations is two to the power of N, and in this case, N is equal to eight, as shown by our general expression for a circuit with N inputs. Therefore, two to the power of eight, or 256, distinct configurations are possible for a circuit having eight inputs. The sequence of the results is irrelevant when calculating the overall outcomes of an event using combinations. In order to calculate combinations, divide the total number of items (n) by the number of items being chosen at a time (r).

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Calculating the design strength of a connection involving a tension member, channel member, and gusset plate, considering bolt shear failure and bearing failure in both the channel member and the gusset plate.

To calculate the design strength of the connection, we need to consider bolt shear failure, bearing failure in the channel member, and bearing failure in the gusset plate. The C8x18.75 channel member is bolted to a 3/8 in. thick gusset plate with 5/8 in. diameter A325 bolts. The tension member is A572 Grade 50 steel, and the gusset plate is A36 steel. We assume that threads are included in the shear plane.

The design strength is calculated using the nominal strengths of the bolts and the bearing strengths of the channel member and gusset plate. The governing strength is the minimum of the three.

The calculations show that 14 bolts are needed to resist the tensile force on the member if bolt shear failure governs. If bearing failure in the channel member governs, 11 bolts are required, and if bearing failure in the gusset plate governs, 13 bolts are needed. Therefore, bearing failure in the channel member governs, and the design strength of the connection is 312.4 kips.

All the edge distance and spacing requirements are satisfied. The calculations assume that threads are included in the shear plane, and the hole diameter is 11/16 in. The design strength of the connection is limited by bearing failure in the channel member.

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Answer:

b in the answer

hope it helps u mark me BRAINLIST

The atomic packing factor for the rock salt crystal structure in which rc/ra = 0.414 is 0.68.

APF = (4 * (rA + rC)³) / (a³)

Where a is the lattice parameter of the crystal (the length of the side of the unit cell).

Plugging in the values, we get:

APF = (4 * (1.88 + 0.75)³) / (5.64³)

APF = 0.68

Therefore, the APF for the rock salt crystal structure with rC/rA = 0.414 is 0.68.

Note that the atomic packing factor is relevant in real life because it helps determine the density and structural stability of materials, influencing properties like strength, conductivity, and reactivity, which are crucial in various industries, including manufacturing, engineering, and materials science.

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Answer:

See the code in the explanation section

Explanation:

Note: the code below is writen in Python language

lower = int(input("Enter lower bound of range: "))

upper = int(input("Enter upper bound of range: "))

sum = 0

for i in range(lower, upper + 1):

 sum = sum + i

 i = i + 1

print("Sum is ", sum)

Polymers is the referred to the class of material which is generally considered to be the weakest at room temperature, offering the lowest elastic moduli and tensile strengths and is denoted as option B.

This refers to a type of compound which are long chained and are formed from smaller repeating chemical units known as monomers through the process which is referred to as polymerization

They are usually in the form of plastics or resins and have features such as lowest elastic moduli and tensile strengths thereby making it the most appropriate choice.

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The options incliude:

A.Metal

B.Polymer

C.Ceramics

D.Composites

Two of the greatest materials for cannabis grinders are aluminum and zinc. Aluminum is available in a range of shapes and sizes, is lightweight, and is inexpensive. Aluminum grinders are also lightweight and inexpensive, but zinc grinders are far more robust.

Metal grinders are stronger, more stable, and more consistent. They are made to durable and can withstand a variety of dry herb consistencies.

Use a metal grinder if you're seeking for a straightforward solution. For grinding homegrown marijuana, many individuals prefer a typical aluminum three-chamber grinder. It is strong, simple to maintain, barely detectable, and portable. Moreover, the grinder has a magnetic cover that aids in maintaining its tight closure.

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Answer:

the function of the regulator in a power supply:-

A voltage regulator is a component of the power supply unit that ensures a steady constant voltage supply through all operational conditions. It regulates voltage during power fluctuations and variations in loads. It can regulate AC as well as DC voltages.

Explanation:

(❁´◡`❁)

Answer:-
The power of regulators to grant significant benefits to, or impose restrictions or penalties on, members of the public – and the extra profits to be gained from avoiding regulations – increases the risks of corruption. Regulators also have a role in collecting and protecting government revenue.

Explanation Operations management is an area of management concerned with designing and controlling the process of production and redesigning business operations in the production of goods or services.[1] It involves the responsibility of ensuring that business operations are efficient in terms of using as few resources as needed and effective in meeting customer requirements.

The capacitive reactance of a DC series circuit increases when its capacitance decreases and vice-versa.

A DC series circuit can be defined as a type of circuit in which all of its resistive components are connected end to end, so as to form a single path for the flow of current.

This ultimately implies that, the same amount of current flows through a direct current (DC) series circuit.

Mathematically, the capacitive reactance of a DC series circuit is given by this formula:

\(X_C = \frac{1}{2\pi fC}\)

Where:

From the above formula, we can deduce that the capacitive reactance of a DC series circuit is inversely proportional to both frequency and capacitance. Thus, the capacitive reactance of a DC series circuit increases when its capacitance decreases and vice-versa.

In conclusion, a capacitor would influence a simple DC series circuit by blocking the flow of direct current (DC) through it.

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The worst way to show self-management is to ask your boss to set all your goals. Self-management is the act of managing one's own behavior, time, and resources effectively to reach a goal.

It is the ability to organize oneself and control impulses, emotions, and actions. It is a skill that requires discipline, self-awareness, and commitment. There are different ways to show self-management, but some ways are better than others.Asking your boss to set all your goals is the worst way to show self-management because it shows a lack of initiative and responsibility. It suggests that you are not willing to take ownership of your career or invest in your development. It also implies that you are not confident in your ability to set and achieve your own goals. By asking your boss to set all your goals, you are giving away your power and agency, and relying on someone else to define your success and progress. This approach can be limiting, disempowering, and demotivating.There are better ways to show self-management, such as planting a time to evaluate your progress, setting your own career goals, and asking for feedback on your progress. Planting a time to evaluate your progress is a proactive way to assess your performance and identify areas for improvement. Setting your own career goals demonstrates ambition, vision, and ownership of your future. Asking for feedback on your progress shows a willingness to learn, grow, and adapt to new challenges. These approaches are more empowering, engaging, and effective than relying on your boss to set all your goals.

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Answer: The head pressure of the system

Explanation:

The bypass ratio demonstrates how much air passes through and how much flows past the combustor in the nacelle. An engine is often more effective the greater the ratio. Additionally, efficient engines use less fuel and emit less emissions.

As the bypass ratio (BPR) climbs, the turbofan engine's TSFC decreases mostly due to an increase in engine efficiency. This study also shows that a high bypass ratio engine can produce more thrust with the same fuel consumption as a lower bypass ratio engine.

Taking the addition's fuel flow rate into consideration A turbofan creates more thrust with virtually the same amount of fuel as the core while just slightly changing the core.

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Answer:

Explained below

Explanation:

The isohyetal method is one used in estimating Rainfall whereby the mean precipitation across an area is gotten by drawing lines that have equal precipitation. This is done by the use of topographic and other data to yield reliable estimates.

Whereas, the arithmetic method is used to calculate true precipitation by the way of getting the arithmetic mean of all the points or arial measurements that will be considered in the analysis.

Answer:

A

Explanation:

Answer:

the answer is a

Explanation:

poor sportsmanship is a terrible thing and will decrease team moral while great sportsmanship is help each other and staying positive on and off the field

Answer: i got you its d

Explanation:had the smae question as you

The goal of a project manager is to increase earnings while maintaining the quality of their products and customer services. They're referred to as "change-makers."

There is a huge demand for project managers. Project managers appear to be in greater demand than ever, with "1.5 million chances every year."

In every industry, project managers are needed. Project managers work to increase revenues without compromising the quality of their products or their client services in industries like IT, manufacturing, healthcare, etc. They're referred to as "change-makers."

The project manager must possess technical, leadership, business, analytical, and problem-solving skills in order to meet the clients' ever-changing needs.

Consider yourself the project manager for a provider of instructional software. A new assignment is given to you to create a digital grading platform for a nearby high school. You consult with teachers, school administrators, the school IT department, and the district superintendent before starting the project to discuss it and receive their feedback.

You kept your ideas organised during these meetings by noting the essential project elements that the stakeholders desired.

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Answer:

given

i=100mph

to=65 F

find thd p

p=i*f

p= 65*100=6500

Answer:

Induced draft is a mechanical draft created by air pulled through the boiler firebox by a blower located in the breaching after the boiler.

Explanation:

Answer:

B. The Hall-Petch Relation

Explanation:

The Hall-Petch relation indicates that by reducing the grain size the strength of a material is increased up to the theoretical strength of the material however when the material grain size is reduced below 20 nm the material is more susceptible to creep deformation and displays an "inverse" Hall-Petch Relation as the Hall-Petch relation then has a negative slope (k value)

The Hall-Petch relation can be presented as follows;

\(\sigma_y\) = \(\sigma_0\) + k·(1/√d)

Where;

\(\sigma_y\) = The strength

σ₀ = The friction stress

d = The grain size

k = The strengthening coefficient

The model equation for the reverse Hall-Petch effect is presented here as follows;

\(\sigma_y\) = 10.253 - 10.111·(1/√d)

Answer:

A

Explanation: